When does electric car get rid of å°´å°¬

[Driving and commuting will take a few hours to charge at night, which is fairly acceptable to an ordinary office worker. But what about the logistics express delivery industry? ]

In 2012, apart from celebrating the grand occasion of the New Year, the first major event that may attract journalists from all over the world should be the Auto Show held in Detroit on January 9. The two-week exhibition is expected to attract more than 730,000 visitors and more than 5,000 reporters from 55 countries. At this year's event, GM's Volt hybrid car got the title of the car of the year, followed by Nissan's speech. Analysts believe that at this year's auto show, new fuel vehicles, including electric vehicles and hybrid vehicles, will attract many people and call for continuous success. However, whether or not to appeal is another matter.

Last year, neither the Breeze nor the Volt sold 10,000 vehicles, and Volt sold even less. In contrast, Toyota Camry sold more than 300,000 vehicles last year. Moreover, Volt also encountered some after-sales troubles. The US Highway Traffic Safety Administration found in a crash test on the Volt that, after a side impact, the coolant around the Volt battery may leak due to the rupture of the container, causing the battery to short circuit and catch fire. Of course, there is only one kind of situation that causes casualties. After the owner was hit, the car owner did not immediately stop to see the severity of the impact and discuss with the perpetrators about the claim. Instead, he continued to drive the smashed car. In any case, GM is still adhering to the principle of safety first, and it is prepared to replace the modified battery for all Volt cars for free. This may allow consumers looking for new fuel cars to watch their wallets squeeze their wallets tighter. Even if they discuss the risk of fire, cars using gasoline are much more expensive.

The biggest reason why new fuel vehicles cannot be sold is that the cost of owning them is too high. In the United States, the Volt2011 model is priced at more than 40,000 US dollars, although the government's tax exemptions and other preferential measures can be based on this subtraction of about 10,000 US dollars, its price is still much higher than the same level of internal combustion engine cars. The price of the Leaf is also about 10,000 US dollars more expensive than a small car of the same class. Even at the peak of fuel prices, the sales of pure electric vehicles have not been greatly stimulated. For example, in Europe where fuel prices have been high, the number of electric vehicles sold is also very poor. Analysts at the American Automobile Dealers Association believe that consumers are still interested in greener, energy-efficient electric and hybrid cars, but when they see the price of cars, they change their minds.

When consumers buy electric or hybrid cars, they may be proud of their petrol for less than their neighbors for a few days, but the embarrassing thing is still behind. Taking the wind as an example, the recommended charging station needs to be connected to a separate circuit and cannot be mixed with other electrical appliances. Furthermore, a voltage of about 240 V and a current of 40 amps are required so that the battery can be fully charged within 7 hours. 110V household outlets used in the United States and other countries can also charge the wind, but it takes about 20 hours to fully charge. In countries where voltages of about 220V are used, the rated operating voltages of switches, wires, and other devices in home circuits are generally only 20 amps. Therefore, even if a consumer drives it to and from work, he or she has to charge it everyday like a smart phone. For Chinese consumers who live in buildings and don't have public charging facilities to use, electric cars such as wind and wind will be used. Not practical anymore.

Analysts believe that 2012 is a critical year for new fuel vehicles, and that they will not start to move into the mainstream during this year, or they will no longer be taken seriously. Automakers generally believe that the traditional ICE vehicle market is near saturation, and new fuel vehicles are the likely profit growth point, so old and cutting-edge auto manufacturers are trying to make them more attractive.

In fact, today's LEG electric vehicle is already a result of a battery technology improvement. Before it, General Motors manufactured an EV1 pure electric vehicle using a lead-acid battery, but due to its high cost and poor battery life, it only invested a small amount in the car rental industry and was soon eliminated. In 2003, Nissan made a breakthrough in battery design. The use of plate-shaped cells instead of traditional cylindrical cells and the development of a smaller, larger, and cheaper lithium battery solution made it possible . The designers of the wind have also added the ability to collect driving data on the premise of obtaining driver's consent, so as to improve the utilization efficiency of electric energy and the mileage of the car by analyzing driving habits and behaviors. The designers of the wind think that electric vehicles must be widely recognized by consumers. In addition to a number of manufacturers offering a variety of models for consumers to choose from, they also need to establish a wide range of charging networks in major cities. The electric cars themselves need to have The 30-minute fast charge halfway through will allow one to open from one population center to another, and it will take about five to seven years to achieve this.

In high-end markets where prices are less valued, electric car manufacturers such as Tesla have already used "driving miracles" to increase the attractiveness of electric cars. Tesla's sports cars, Roadster and Smart, claim to have the highest energy density batteries in the industry. Their approach is to procure the best batteries from first-rate suppliers at a cost, make them into plate-like modules, and put the modules into perfusion. In the battery compartment of the coolant, the entire battery consists of 6831 cells and a well-designed cooling system and collision avoidance system. This can improve the utilization efficiency of the electric energy by reducing the temperature difference between the cells, and also avoid the collision risk of the Volt. 400 kilometers of life. There is nothing special about the technology of the batteries themselves, which is almost the same as the batteries used in general notebooks.

However, the charging time of the lithium battery is still too long. Driving and commuting takes a few hours to charge at night, which is fairly acceptable to an ordinary office worker. But what about the logistics express delivery industry? If they are all fast-charged with high voltage, the current car lithium battery can be charged in half an hour, but the battery life may be greatly reduced, and this is still several times the time of the internal combustion engine car plus oil at the gas station, which will lead to cities The gas station next to the main road that can only accommodate 8 cars must now be able to accommodate at least 50 cars. This is unrealistic in a city that is very expensive. Of course, the quickest way is to prepare the battery module at the charging station, which can be replaced at a time. However, this firstly requires the car manufacturer to support the replaceable battery when designing, and secondly, the car battery size and charging interface need to be standardized. Each gas station needs to prepare several spare batteries for each model and monitor their power and health. The storage and management costs will be unimaginably high. Considering that even the specifications and interfaces of mobile phone batteries are not uniform, it is difficult to achieve a unified specification for car batteries.

In fact, compared with the ever-changing automobile manufacturing and computer hardware and software technology advances, battery technology progress is almost as slow as a snail. In a decade, the mainstream of lithium batteries may not be challenged. If anything, it may be that the electric vehicle industry began to shift from lithium-manganese batteries with high efficiency but short life time to lithium-iron-phosphate batteries with lower voltage but more frequent charging and discharging, but this has not changed the inherent shortcomings of lithium batteries. When can an electric car be accepted by everyone like an internal combustion engine car? Maybe not in 2012.

In 1888, the wife of the inventor of Hyundai Motors, Benjamin Bentzitz, drove the car Carl invented without the knowledge of her husband and returned to her mother’s house for more than 200 kilometers. On the way, she stopped to add an oil, made up the tires, and invented the brakes by the way. Where she refueled, it became the world's first gas station - a pharmacy in the small town of Wiesloch. Perhaps only when driving electric cars can be so casual, the widespread use of electric vehicles can become a reality.